You could also try using something like the following, one on each layer:
POSITION CL ALIGN RIGHT OFFSET -5 0
POSITION CR ALIGN LEFT OFFSET 5 0
Obviously set 5 to a value that makes sense for you. Or you can use
ALIGN CENTER and push the farther apart so the longest lines in each set
does not interfere with the adjacent label.
The problem with searching for open space is that it is hard and
computationally expensive. You would be better off precomputing a label
point and create a separate layer for labeling.
-Steve
On 4/6/2012 2:12 PM, Mark Volz wrote:
Steve,
Thank you for your comments. I should have mentioned that I am using
multi-line labels so using position did not move the label over quite
enough. However, I was able to get the label to work by using offset
which allows me to get the label in closer than when I was using wrap
to create empty lines to move the label up.
I wish there were some better options for label placement such as fit
a second label inside the largest area of a polygon between current
labels and the polygon boundary. This way we could force secondary
labels to fit within the parcel. Second, it would also be nice if we
have a choice to make sure that the labels fit within the bbox, or
within the polygon boundary. That way we could make sure that labels
fit within the polygon for illregular shaped parcels such as a soils
layer. But of course those are unfunded thoughts.
Mark Volz GIS Specialist
-----Original Message----- From:
[email protected]
[mailto:[email protected]] On Behalf Of
[email protected] Sent: Friday, April 06, 2012
11:00 AM To: [email protected] Subject: mapserver-users
Digest, Vol 51, Issue 6
Message: 5 Date: Fri, 06 Apr 2012 11:35:09 -0400 From: Stephen
Woodbridge<[email protected]> Subject: Re: [mapserver-users]
placement of labels from two different polygons that have the same
feature shape To: [email protected]
Message-ID:<[email protected]> Content-Type:
text/plain; charset=ISO-8859-1; format=flowed
On 4/6/2012 11:07 AM, Mark Volz wrote:
Hello, I would like to label both parcel polygons, and lot polygons
on my map. Unfortunately, if the parcel and the lot have the exact
same boundary, only the parcel is labeled. Does anyone have any
ideas or map files on how I could label both parcel polygons and
lot polygons? Am I missing a keyword that when the parcel is
labeled at the center of the bounding box, a secondary label for
the lots could be placed within the open area of the boundary box?
I asked this question last year, at the time one person suggested
that I could convert my data into points, which has more labeling
positions. Unfortunately, I would prefer not to convert my data
into points for labeling as I would like to take advantage
MINFEATURESIZE AUTO which only works with polygons. P.S. I found
that the wrap keyword works so It is possible to label both parcels
and lots. However, since extra lines are added the label might fall
on top of the wrong lot if I zoom out too far. Thank you Mark Volz
GIS Specialist
Mark,
The easiest way to do this is to do something like set the possition
of one to be UC and the other to be LC. you can also push them
farther apart by using OFFSET to move the upper one higher and the
lower one lower.
You might also try POSITION AUTO, but if you use BUFFER this will not
help.
-Steve W
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